how to fix P0302 misfire code in Toyota Corolla E210 (2019-2024)

Solution

1. Preparation

• Gather necessary tools and components.
• Ensure the engine is cool and disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 2.
• Extract the spark plug using the spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage. Replace if necessary.
• Install the new spark plug and torque to the manufacturer's specification (typically 13-16 lb-ft).

3. Inspect and Replace Ignition Coil

• Remove the ignition coil from cylinder 2.
• Inspect the coil for cracks or signs of wear. Test the coil with a multimeter for proper resistance (if applicable).
• If the coil is faulty, replace it with a new one, ensuring proper seating and connection.

4. Check Fuel Injector

• Disconnect the fuel injector connector on cylinder 2.
• Use a multimeter to check for continuity and resistance.
• If the injector is faulty, replace it with a new fuel injector.

5. Reassemble and Test

• Reconnect the ignition coil and fuel injector.
• Reconnect the negative battery terminal.
• Start the engine and let it idle to check for smooth operation and ensure the check engine light remains off.